THEY HAVE RECYCLED WASTE-PAPER INTO NEWSPRINT.A. WASTE PAPER HAVE R...

6. - DE THI ANH VAN
DE THI ANH VAN

6. They have recycled waste-paper into newsprint.

A. Waste paper have recycled into newsprint.

B. Waste paper has recycled into newsprint.

C. Waste paper has been recycled into newsprint.

D. Waste paper was recycled into newsprint.

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